1.. _skiboot-5.9.7: 2 3============= 4skiboot-5.9.7 5============= 6 7skiboot 5.9.7 was released on Friday December 22nd, 2017. It replaces 8:ref:`skiboot-5.9.6` as the current stable release in the 5.9.x series. 9 10Over :ref:`skiboot-5.9.6`, we have two bug fixes, they are: 11 12- phb4: Change PCI MMIO timers 13 14 Currently we have a mismatch between the NCU and PCI timers for MMIO 15 accesses. The PCI timers must be lower than the NCU timers otherwise 16 it may cause checkstops. 17 18 This changes PCI timeouts controlled by skiboot to 33-50ms. It should 19 be forwards and backwards compatible with expected hostboot changes to 20 the NCU timer. 21- p8-i2c: Limit number of retry attempts 22 23 Currently we will attempt to start an I2C transaction until it succeeds. 24 In the event that the OCC does not release the lock on an I2C bus this 25 results in an async token being held forever and the kernel thread that 26 started the transaction will block forever while waiting for an async 27 completion message. Fix this by limiting the number of attempts to 28 start the transaction. 29